Fluorescent lamps are more efficient than incandescent lamps in converting electrical energy to visible light becausea)they produce more white lightb)they do not use uv radiationsc)they do not waste as much energy producing (invisible) infrared photonsd)they do not waste as much energy producing visible photonsCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

The phosphor fluoresces to produce light. A fluorescent bulb produces less heat, so it is much more efficient. This makes fluorescent bulbs four to six times more efficient than incandescent bulbs. That's why you can buy a 15-watt fluorescent bulb that produces the same amount of light as a 60-watt incandescent bulb.

Answer

Option(c)becoz-->>

Fluorescent lamps, use about 75 percent less energy than incandescent bulbs and last six to 15 times as long.

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Because the incandescent lamps do not waste as much energy... and they are invisible

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Fluorescent lamps are more efficient than incandescent lamps in converting electrical energy to visible light because:

There are several reasons why fluorescent lamps are more efficient than incandescent lamps in converting electrical energy to visible light. The correct answer, option C, states that fluorescent lamps do not waste as much energy producing (invisible) infrared photons. Let's explore this in detail:

1. Conversion of electrical energy to visible light:
- Both fluorescent and incandescent lamps convert electrical energy into light, but they do so in different ways.
- Incandescent lamps produce light by passing an electric current through a thin filament, which heats up and emits light as a result of thermal radiation.
- Fluorescent lamps, on the other hand, use a different mechanism. An electric current is passed through a gas-filled tube containing mercury vapor. This excites the mercury atoms, causing them to emit ultraviolet (UV) light.

2. Fluorescent lamps produce UV light:
- The UV light emitted by the mercury atoms in a fluorescent lamp is not visible to the human eye.
- However, it serves as the source of energy for the phosphor coating on the inside of the lamp.
- When the UV light interacts with the phosphor, it causes the phosphor to fluoresce, emitting visible light.

3. Infrared (IR) photons:
- Incandescent lamps produce a significant amount of infrared (IR) radiation along with visible light.
- IR radiation is part of the electromagnetic spectrum and is not visible to the human eye.
- This means that a portion of the electrical energy consumed by an incandescent lamp is wasted in the form of IR photons.

4. Fluorescent lamps and wasted energy:
- Fluorescent lamps, unlike incandescent lamps, do not produce as much IR radiation.
- The lack of IR radiation in fluorescent lamps means that they do not waste as much energy producing invisible IR photons.
- Instead, the energy is primarily used to excite the mercury atoms, which then emit UV light to stimulate the phosphor coating and produce visible light.

5. Overall efficiency:
- Due to the reduced waste of energy in the form of IR radiation, fluorescent lamps are more efficient in converting electrical energy into visible light.
- This increased efficiency results in a higher lumen output per watt of electrical power consumed compared to incandescent lamps.
- Fluorescent lamps can produce the same amount of visible light as incandescent lamps while using less energy, making them more energy-efficient and cost-effective in the long run.

In conclusion, the correct answer, option C, states that fluorescent lamps are more efficient than incandescent lamps because they do not waste as much energy producing invisible infrared photons. This lack of wasted energy contributes to the overall higher efficiency of fluorescent lamps in converting electrical energy into visible light.

Answer

Introduction:
Fluorescent lamps are known to be more efficient than incandescent lamps when it comes to converting electrical energy into visible light. This is mainly due to the way fluorescent lamps work and the technology they employ.

Explanation:
To understand why fluorescent lamps are more efficient, we need to delve into the working principles of both types of lamps.

1. Incandescent lamps:
- Incandescent lamps produce light by passing an electric current through a filament, which then heats up and emits light.
- The majority of the energy consumed by incandescent lamps is converted into heat rather than visible light.
- Only a small percentage of the energy is actually converted into visible light, while the rest is wasted as infrared radiation.

2. Fluorescent lamps:
- Fluorescent lamps work on a completely different principle. They contain a gas mixture (typically mercury vapor) and a phosphor coating on the inner surface of the lamp.
- When an electric current passes through the lamp, it excites the mercury atoms, causing them to emit ultraviolet (UV) radiation.
- The phosphor coating then absorbs the UV radiation and re-emits it as visible light.
- This process of converting UV radiation to visible light is much more efficient than the direct conversion of electrical energy to light in incandescent lamps.

Reasons for Fluorescent Lamps' Higher Efficiency:
Now, let's address the options provided and explain why option 'C' is the correct answer.

a) They produce more white light:
- While it is true that fluorescent lamps produce white light, this does not directly contribute to their higher efficiency. The color of light emitted is unrelated to the energy conversion efficiency.

b) They do not use UV radiations:
- This statement is incorrect. Fluorescent lamps do use UV radiation, but they convert it into visible light through the phosphor coating.

c) They do not waste as much energy producing (invisible) infrared photons:
- This option correctly explains the higher efficiency of fluorescent lamps. Incandescent lamps waste a significant amount of energy as infrared radiation, which is not visible light. In contrast, fluorescent lamps convert most of the electrical energy into visible light, minimizing energy wastage.

d) They do not waste as much energy producing visible photons:
- This option is incorrect. Fluorescent lamps are specifically designed to produce visible photons efficiently, so they do not waste energy in this regard.

Conclusion:
The correct answer is option 'C' - fluorescent lamps are more efficient than incandescent lamps because they do not waste as much energy producing (invisible) infrared photons. The conversion of electrical energy to visible light in fluorescent lamps is more efficient due to the utilization of UV radiation and the subsequent conversion by the phosphor coating.

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Fluorescence is

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